Volvo Trucks deliveries during January-July 2007 were down 10% year on year to 54,258 vehicles.

In markets outside North America, deliveries increased by 21%, with the strong trend continuing in eastern Europe, where the increase for the period was a full 84%. Western Europe was flat, posting just a 3% rise.

"The increase in other market areas in various parts of the world shows that demand for transportation is currently very strong," Volvo Trucks said. "For example, South America rose by 24% and Asia by 21%.

The truck maker said the "sharp decrease" - 64% - in North America was attributable in part to weak demand during the first two quarters of 2007, after new exhaust emission rules became effective on 1 January 2007 and operators brought forward truck deliveries into 2006.

Deliveries were also affected by production disruptions at the US plant in New River Valley, Virginia, as new truck models with new engines were introduced and the plant updated.